urgent !!

Sahil Corporation purchased a depreciable asset for $390,000 on January 1,2022 . The estimated salvage value is $30,000, and the estimated useful life is 9 years. The straight-line method is used for depreciation. On January 1,2025 , the company changed its estimates to a total remaining useful life of 8 years with a salvage value of $50,000. What is 2025 depreciation expense? $40,000 $50,000 $27,500 $60,000 Nakisa Corporation purchased a truck at the beginning of 2023 for $90,000. The truck is estimated to have a salvage value of $3,000 and a useful life of 120,000 miles. It was driven 18,000 miles in 2023 and 32,000 miles in 2024 . What is the book value of the truck on December 31,2024 ? $50,750 $55,800 $53,750 $52,500